9 files changed, 20 insertions, 8 deletions
diff --git a/compiler/rustc_trait_selection/src/lib.rs b/compiler/rustc_trait_selection/src/lib.rs
index 56d37d58de7..5ba29f87855 100644
--- a/compiler/rustc_trait_selection/src/lib.rs
+++ b/compiler/rustc_trait_selection/src/lib.rs
@@ -11,6 +11,9 @@
 //! This API is completely unstable and subject to change.
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
+#![cfg_attr(not(bootstrap), doc(rust_logo))]
+#![cfg_attr(not(bootstrap), feature(rustdoc_internals))]
+#![cfg_attr(not(bootstrap), allow(internal_features))]
 #![feature(associated_type_bounds)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
diff --git a/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs
index 066129d8e47..066129d8e47 100644
--- a/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs
+++ b/compiler/rustc_trait_selection/src/solve/eval_ctxt/mod.rs
diff --git a/compiler/rustc_trait_selection/src/solve/mod.rs b/compiler/rustc_trait_selection/src/solve/mod.rs
index 77a3b5e1284..d45fe102805 100644
--- a/compiler/rustc_trait_selection/src/solve/mod.rs
+++ b/compiler/rustc_trait_selection/src/solve/mod.rs
@@ -32,14 +32,11 @@ mod assembly;
 mod canonicalize;
 mod eval_ctxt;
 mod fulfill;
-mod inherent_projection;
 pub mod inspect;
 mod normalize;
-mod opaques;
 mod project_goals;
 mod search_graph;
 mod trait_goals;
-mod weak_types;
 
 pub use eval_ctxt::{
     EvalCtxt, GenerateProofTree, InferCtxtEvalExt, InferCtxtSelectExt, UseGlobalCache,
diff --git a/compiler/rustc_trait_selection/src/solve/inherent_projection.rs b/compiler/rustc_trait_selection/src/solve/project_goals/inherent_projection.rs
index 28fe59b7f6a..28fe59b7f6a 100644
--- a/compiler/rustc_trait_selection/src/solve/inherent_projection.rs
+++ b/compiler/rustc_trait_selection/src/solve/project_goals/inherent_projection.rs
diff --git a/compiler/rustc_trait_selection/src/solve/project_goals.rs b/compiler/rustc_trait_selection/src/solve/project_goals/mod.rs
index 339a3e73846..2c000293f26 100644
--- a/compiler/rustc_trait_selection/src/solve/project_goals.rs
+++ b/compiler/rustc_trait_selection/src/solve/project_goals/mod.rs
@@ -18,6 +18,10 @@ use rustc_middle::ty::{self, Ty, TyCtxt};
 use rustc_middle::ty::{ToPredicate, TypeVisitableExt};
 use rustc_span::{sym, ErrorGuaranteed, DUMMY_SP};
 
+mod inherent_projection;
+mod opaques;
+mod weak_types;
+
 impl<'tcx> EvalCtxt<'_, 'tcx> {
     #[instrument(level = "debug", skip(self), ret)]
     pub(super) fn compute_projection_goal(
diff --git a/compiler/rustc_trait_selection/src/solve/opaques.rs b/compiler/rustc_trait_selection/src/solve/project_goals/opaques.rs
index f08adc0208b..ebd129f32b9 100644
--- a/compiler/rustc_trait_selection/src/solve/opaques.rs
+++ b/compiler/rustc_trait_selection/src/solve/project_goals/opaques.rs
@@ -7,7 +7,7 @@ use rustc_middle::traits::Reveal;
 use rustc_middle::ty;
 use rustc_middle::ty::util::NotUniqueParam;
 
-use super::{EvalCtxt, SolverMode};
+use crate::solve::{EvalCtxt, SolverMode};
 
 impl<'tcx> EvalCtxt<'_, 'tcx> {
     pub(super) fn normalize_opaque_type(
diff --git a/compiler/rustc_trait_selection/src/solve/weak_types.rs b/compiler/rustc_trait_selection/src/solve/project_goals/weak_types.rs
index 54de32cf618..54de32cf618 100644
--- a/compiler/rustc_trait_selection/src/solve/weak_types.rs
+++ b/compiler/rustc_trait_selection/src/solve/project_goals/weak_types.rs
diff --git a/compiler/rustc_trait_selection/src/solve/search_graph/mod.rs b/compiler/rustc_trait_selection/src/solve/search_graph.rs
index 33513f6bd43..33513f6bd43 100644
--- a/compiler/rustc_trait_selection/src/solve/search_graph/mod.rs
+++ b/compiler/rustc_trait_selection/src/solve/search_graph.rs
diff --git a/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs b/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs
index 9d7933e23a8..a5ccf62608e 100644
--- a/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/query/type_op/mod.rs
@@ -157,10 +157,18 @@ where
         }
 
         let mut region_constraints = QueryRegionConstraints::default();
-        let (output, error_info, mut obligations, _) =
-            Q::fully_perform_into(self, infcx, &mut region_constraints).map_err(|_| {
-                infcx.tcx.sess.delay_span_bug(span, format!("error performing {self:?}"))
-            })?;
+        let (output, error_info, mut obligations) =
+            Q::fully_perform_into(self, infcx, &mut region_constraints)
+                .map_err(|_| {
+                    infcx.tcx.sess.delay_span_bug(span, format!("error performing {self:?}"))
+                })
+                .and_then(|(output, error_info, obligations, certainty)| match certainty {
+                    Certainty::Proven => Ok((output, error_info, obligations)),
+                    Certainty::Ambiguous => Err(infcx
+                        .tcx
+                        .sess
+                        .delay_span_bug(span, format!("ambiguity performing {self:?}"))),
+                })?;
 
         // Typically, instantiating NLL query results does not
         // create obligations. However, in some cases there